I have been out of touch with iPads for about a year but I was able to experience that problem a couple of years ago when Drive was the first to go 64-bit. I had auto update enabled and the 32-bit version was replaced in my catalog before the problem was discovered. Google did re-release the 32-bit version and I turned off auto-update. I recommend checking to see if they older versions are still around and scope those out. If all else fails, test logging into Google from a browser to see if that will get you through the summer.
Thanks for the suggestions, especially the workaround of using the browser to access drive, docs, etc.